On 10/25/21 6:55 PM, Spandan Mahadevegowda wrote:
Hello Alexandru,
I'm currently working on some POC on Pine64 that requires a Trusted
Execution Environment. I was using U-Boot 2020.10 with SPL_FIT_GENERATOR
and modified mksunxi_fit_atf.sh to accommodate OP-TEE. However, due to
new changes in OPTEE and ARM_TF, I was required to update the components
and as such had to change to the recent version of U-Boot.
I see that from the 2021.01 release and later, all ARM64 devices
including sunxi boards were modified to use binman. I did the necessary
changes in the latest u-boot to use my tee.bin and generate the
u-boot-sunxi-with-spl.bin. However, when I run this on the board, I see
that the SPL throws the "alloc space exhausted", "Could not get FIT
buffer of 1694208 bytes" errors and I understand that this is due to the
change in how SPL now loads images from your commit
*03f1f78a9b44b5fd6fc09faf81639879d2d0f85f*. I am not very familiar with
FIT and DTB handling, could you guild me with some pointers on how I can
fix this?
Try increasing CONFIG_SYS_SPL_MALLOC_SIZE.
After debugging a little, I found that the BL31 (ARM-TF) does not find
any DTB to load BL33 (UBOOT) after the BL31->BL32->BL31 (ARM-TF-> OPTEE
-> ARM-TF) flow. In the Configuration, if I put "tee" as the first
loadable, the OPTEE loads and does its initialization and gives back
control to ARM-TF after which ARM-TF does not know where to find UBOOT.
But if I put uboot first under loadable, ARM-TF does not find OPTEE
(BL32). Any inputs from your end would greatly help me.
Thank you for your time and consideration,
--
Best Regards,
*Spandan Mahadevegowda*
